What does the idea of "uniformitarianism" suggest about the geological record and the age of Earth?

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Natural processes (e.g., sedimentation due to river flow) occurring over long stretches of time accounted for the thick layers of rock where fossils are found, rather than cataclysmic events.
Earths species were created initially but many were destroyed by successive catastrophes.
Earth was only 6000 years old.
Species were evidence of acts of divine creation.